Sector 4 is one of the six administrative sectors of Bucharest, Romania, serving as a vibrant urban area with a significant population of approximately 287,828 residents. Located in the southern part of the capital, it plays a crucial role in the city's economic and cultural landscape. Known for its diverse neighborhoods, parks, and modern amenities, Sector 4 is a hub for both locals and visitors, offering a mix of residential, commercial, and recreational spaces that contribute to Bucharest's dynamic atmosphere.

Sector 4 was established during the administrative reorganization of Bucharest in the mid-20th century. It has since evolved into a key area reflecting the city's growth and modernization.

The economy of Sector 4 is characterized by a blend of retail, services, and manufacturing industries. Numerous businesses thrive in this sector, making it a vital contributor to Bucharest's overall economic activity and employment opportunities.

Tourism in Sector 4 attracts visitors with its array of parks, shopping centers, and cultural sites. Key attractions include the Tineretului Park, the National Arena, and vibrant local markets, where tourists can experience the lively atmosphere and enjoy the local cuisine.